Key words for biconditioners

juneby01

Can anyone please tell me if there are key words that indicate the rule is a biconditional rule? for some reason I thought it was only "if and only if"
Thanks in advance

hannahwrendunning

Watch the video of PT 55 Games for Game 4. This is a a great example of a differently worded biconditional statement. Also a really really hard game and a good one to master!!

juneby01

Thank you

quinnxzhang

Keywords include: "if and only if", "necessary and sufficient", "just in case", "just". Some other connectives can also be expressed equivalently in terms of biconditionals, such as the exclusive-or ("one, but not both").